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| Description: Existence of a difference. |
| Ref | Expression |
|---|---|
| difexg |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | difss 2735 |
. 2
| |
| 2 | ssexg 3457 |
. 2
| |
| 3 | 1, 2 | mpan 759 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: difex2 3802 difex2OLD 3803 elpwun 3855 oev 5198 fodomr 5547 limensuci 5600 unfilem3 5643 pwfilem 5660 infeq5 5727 kmlem11 5937 kmlem12 5938 acdc2lem2 8758 acdc5lem2 8761 infxpidmlem12 8832 infdif 8837 infdif2 8838 infpss 8843 cctop 8922 ablmul 9439 grothprim 10141 dif1enOLD 10173 indexfi 10174 dif1card 10177 findcard 10178 findcardOLD 10179 bnj113 12458 rcfpfillem3 14930 rcfpfillem6 14933 clindistop 14962 lteqtpos 15024 opncldf1 15402 cptclsscpt 15432 compfipin0lem 15435 compfipin0 15436 ufileu 15573 filufint 15574 ufinffr 15578 ufilen 15579 fcluscf 15612 flimfnfcls 15615 findcard2 15745 indexfiOLD 15755 zornn0 15764 frfi 15771 fdc 15812 heiborlem3 15957 heiborlem5 15959 heiborlem7 15961 heiborlem8 15962 isdivrng2 16111 pltval 16781 divrngmclNEW 17164 divrngidlemNEW 17165 divrngidNEW 17166 invrcl 17171 watomval 17393 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 1304 ax-gen 1305 ax-8 1306 ax-9 1307 ax-10 1308 ax-11 1309 ax-12 1310 ax-17 1317 ax-4 1319 ax-5o 1321 ax-6o 1324 ax-9o 1481 ax-10o 1500 ax-16 1580 ax-11o 1588 ax-ext 1865 ax-sep 3438 |
| This theorem depends on definitions: df-bi 164 df-or 241 df-an 242 df-ex 1327 df-sb 1536 df-clab 1872 df-cleq 1877 df-clel 1880 df-v 2294 df-dif 2597 df-in 2603 df-ss 2605 |